<template>
  <div class="cart" :key='reload'>
    <h4>全部商品</h4>
    <div class="cart-main">
      <div class="cart-th">
        <div class="cart-th1">全部</div>
        <div class="cart-th2">商品</div>
        <div class="cart-th3">单价（元）</div>
        <div class="cart-th4">数量</div>
        <div class="cart-th5">小计（元）</div>
        <div class="cart-th6">操作</div>
      </div>
      <div class="cart-body">
        <div v-if='cartInfoList.length>0'>
          <ul class="cart-list" v-for='item in cartInfoList' :key='item.id'>
          <li class="cart-list-con1">
            <input type="checkbox" name="chk_list" :checked='item.isChecked' @change='switchChecked(item.skuId,$event)'>
          </li>
          <li class="cart-list-con2">
            <img :src="item.imgUrl">
            <div class="item-msg">{{item.skuName}}</div>
          </li>
          <li class="cart-list-con4">
            <span class="price">{{item.skuPrice}}</span>
          </li>
          <li class="cart-list-con5">
            <a href="javascript:void(0)" class="mins" @click="updateNum(-1,item.skuId,item.skuNum)">-</a>
            <input autocomplete="off" type="text" :value="item.skuNum" minnum="1" class="itxt" 
                   @change="handleChange(item.skuNum,item.skuId,$event)">
            <a href="javascript:void(0)" class="plus" @click="updateNum(1,item.skuId,item.skuNum)">+</a>
          </li>
          <li class="cart-list-con6">
            <span class="sum">{{item.skuNum*item.skuPrice}}</span>
          </li>
          <li class="cart-list-con7">
            <a href="javascript:;" class="sindelet" @click='deleteCart(item.skuId)'>删除</a>
            <br>
          </li>
        </ul>
        </div>
        <div v-else>
          <h1 style='font-size:40px;color:red;text-align:center'>暂无数据</h1>
        </div>
      </div>
    </div>
    <div class="cart-tool">
      <div class="select-all">
        <input class="chooseAll" type="checkbox" :checked='checkAll' @change='switchAllCheck'>
        <span>全选</span>
      </div>
      <div class="option">
        <a href="javascript:;" @click='delCheckedGoods'>删除选中的商品</a>
      </div>
      <div class="money-box">
        <div class="chosed">已选择
          <span>{{totalCheckedCount}}</span>件商品</div>
        <div class="sumprice">
          <em>总价（不含运费） ：</em>
          <i class="summoney">{{totalCheckedPrice}}</i>
        </div>
        <div class="sumbtn">
          <router-link class="sum-btn"  to='/trade'>结算</router-link>
        </div>
      </div>
    </div>
  </div>
</template>

<script>
import {mapState,mapActions,mapGetters} from 'vuex'
  export default {
    name: 'ShopCart',
    data(){
      return {
        reload:0
      }
    },
    computed:{
      ...mapState({
        cartInfoList:state=>state.shopcart.cartInfoList
      }),
      ...mapGetters(['checkAll','checkAllIds','noCheckAllIds','totalCheckedCount','totalCheckedPrice'])
    },
    methods:{
      ...mapActions(['getCartList']),
      async deleteCart(skuId){
        try{
          await this.$api.delCartList(skuId)
        }catch(e){
         
        }finally{
           await this.getCartList();
        }
      },
       async delCheckedGoods(){
         try{
           await this.$api.delChecked(this.checkAllIds)
         }catch(e){

         }finally{
           await this.getCartList();
         }
      },
      async switchChecked(skuId,e){
        try{
          let checked=e.target.checked?1:0;
          await this.$api.switchChecked({skuId,checked})
        }catch(e){

        }finally{
          await this.getCartList();
        }
      },
      async switchAllCheck(e){
        try{
            let isChecked=e.target.checked?1:0;
            let skuIdArr=[];
            if(isChecked===1){
              skuIdArr=this.noCheckAllIds;
            }else if(isChecked===0){
              skuIdArr=this.checkAllIds;
            }
            await this.$api.switchAllChecked(skuIdArr,isChecked)
        }catch(e){

        }finally{
           await this.getCartList();
        }

      },
      async handleChange(skuNum,skuId,e){
        let endNum=+e.target.value;
        let adder=endNum-skuNum;
        if(Number.isNaN(adder)){
          this.reload++
          return ;
        }
        await updateNum(adder,skuId,skuNum)
      },
      async updateNum(adder,skuId,total){
        if(total+adder<1){
          await this.deleteCart(skuId)
          return;
        }
        try{
          await this.$api.addCart({skuId,skuNum:adder})
        }catch(e){

        }finally{
          await this.getCartList();
        }
      }
    },
    async mounted(){
      await this.getCartList();
    }
  }
</script>

<style lang="less" scoped>
  .cart {
    width: 1200px;
    margin: 0 auto;

    h4 {
      margin: 9px 0;
      font-size: 14px;
      line-height: 21px;
    }

    .cart-main {
      .cart-th {
        background: #f5f5f5;
        border: 1px solid #ddd;
        padding: 10px;
        overflow: hidden;

        &>div {
          float: left;
        }

        .cart-th1 {
          width: 25%;

          input {
            vertical-align: middle;
          }

          span {
            vertical-align: middle;
          }
        }

        .cart-th2 {
          width: 25%;
        }

        .cart-th3,
        .cart-th4,
        .cart-th5,
        .cart-th6 {
          width: 12.5%;

        }
      }

      .cart-body {
        margin: 15px 0;
        border: 1px solid #ddd;

        .cart-list {
          padding: 10px;
          border-bottom: 1px solid #ddd;
          overflow: hidden;

          &>li {
            float: left;
          }

          .cart-list-con1 {
            width: 10%;
          }

          .cart-list-con2 {
            width: 40%;

            img {
              width: 82px;
              height: 82px;
              float: left;
            }

            .item-msg {
              float: left;
              width: 150px;
              margin: 0 10px;
              line-height: 18px;
            }
          }


          .cart-list-con4 {
            width: 12.5%;

          }

          .cart-list-con5 {
            width: 12.5%;

            .mins {
              border: 1px solid #ddd;
              border-right: 0;
              float: left;
              color: #666;
              width: 6px;
              text-align: center;
              padding: 8px;
            }

            input {
              border: 1px solid #ddd;
              width: 40px;
              height: 33px;
              float: left;
              text-align: center;
              font-size: 14px;
            }

            .plus {
              border: 1px solid #ddd;
              border-left: 0;
              float: left;
              color: #666;
              width: 6px;
              text-align: center;
              padding: 8px;
            }
          }

          .cart-list-con6 {
            width: 12.5%;

            .sum {
              font-size: 16px;
            }
          }

          .cart-list-con7 {
            width: 12.5%;

            a {
              color: #666;
            }
          }
        }
      }
    }

    .cart-tool {
      overflow: hidden;
      border: 1px solid #ddd;

      .select-all {
        padding: 10px;
        overflow: hidden;
        float: left;

        span {
          vertical-align: middle;
        }

        input {
          vertical-align: middle;
        }
      }

      .option {
        padding: 10px;
        overflow: hidden;
        float: left;

        a {
          float: left;
          padding: 0 10px;
          color: #666;
        }
      }

      .money-box {
        float: right;

        .chosed {
          line-height: 26px;
          float: left;
          padding: 0 10px;
        }

        .sumprice {
          width: 200px;
          line-height: 22px;
          float: left;
          padding: 0 10px;

          .summoney {
            color: #c81623;
            font-size: 16px;
          }
        }

        .sumbtn {
          float: right;

          a {
            display: block;
            position: relative;
            width: 96px;
            height: 52px;
            line-height: 52px;
            color: #fff;
            text-align: center;
            font-size: 18px;
            font-family: "Microsoft YaHei";
            background: #e1251b;
            overflow: hidden;
          }
        }
      }
    }
  }
</style>